Template compilation error using HPX_WITH_DATAPAR_LIBFLATARRAY

[BryantLam]

Building git commit 88af985 with HPX_WITH_DATAPAR_LIBFLATARRAY=ON.

This header file generated GCC compiler errors:
hpx/parallel/traits/detail/libflatarray/vector_pack_alignment_size.hpp
60:44: error: expected primary-expression before > token
60:45: error: '::ALIGNMENT' has not been declared
69:44: error: expected primary-expression before > token
69:45: error: '::ALIGNMENT' has not been declared

Resolution was to change lines 60 and 69
from shortvec::strategy::alignment<T>::ALIGNMENT
to shortvec::strategy::template alignment<T>::ALIGNMENT

This bug may affect the other hpx/parallel/traits/detail/* implementations as well.

[hkaiser]

Thanks, this is currently not fully implemented because of missing pieces in libflatarray. Please don't use this option at this point. We hope to have this finalized before releasing V1.0.

Both, HPX_WITH_DATAPAR_VC and HPX_WITH_DATAPAR_BOOST_SIMD should be fine, though, especially on the branch datapar_octotiger (PR #2388). Please report any problems you may find there.

@gentry: Do you have a estimated timeline for libflatarray becoming usable here?

[hkaiser]

@gentryx Is this something you would consider fixing in libflatarray? Or should we remove the attempts of integrating it with HPX and close this ticket instead?